Hoisting-machine



(No Model.)

0. PLOHR.. I HOISTING MACHINE.

' No. 484,358. Patented Oct: 11, 1892.

IIIIIIIIIIIIIUIIIIH m INVENTOI? ATTORNEY.

UNITED STATES PATENT OFFICE.

OTTO FLOHR, OF BUFFALO, NEW YORK.

HOISTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 484,358, dated October 11, 1892.

Application filed November 23, 1891- Serial No 412,706. (No model.)

To all whom it may concern.-

Be it known that I, OTTO FLOHR, a citizen of the United States,'residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Hoisting-Machines, of which the following is a full, clear, and exact specification.

My invention relates to hoisting-engines; and its objects are to produce a machine which will do more work with a less amount of steam-pressure than other machines of this character now in use, and also to enable such machines to be easily operated and controlled. With these objects in view I will proceed to describe my improvements, reference being had to the accompanying drawings, in which Figure 1 is a central vertical sectional view of my singledrum hoisting-machine and multiplied gearing therefor, taken on line 1 l of Fig. 2. Fig. 2 is a plan view of the same, and Fig. 3 is a plan in detail of the bracket containing the pinions and gear-wheel.

M represents the drum-shaft; N, the driving-gear connected thereto; 0, the windingdrum mounted loosely thereon, and P the fixed framework of the engine.

In using the machine for hoisting purposes in single gear the driving-gear N is coupled direct with pinion is, slidably keyed on the engine-shaft 7c and independentof pinions is", Z, and gear Z, receiving motion only from the pinion It. The drum 0 is connected to the driving-gear N by means of bolts Z and is rotated by the said gear N. The pinion 7c meshes with pinion 7c", and the said pinion k" with the gear Z, which is keyed on the shaft m in the bracket 0%. The pinion Z is also keyed on the shaft m, close up to gear Z, and the pinion Z in turn meshes with the driving-gear N. By the use of my improved gearing a greater power is obtained than by any other machine now in use. A swinging frame m is loosely journaled on a pivot g, which is either cast integral with or firmly affixed to the engine-frame P. The outer end of the swinging frame 1% is free and allowed to move vertically, using the pivot q as an axis. The said frame m carries the pinions 7c" andZ and gear Z, and is operated by a cam r, journaled in the frame P.

When using the machine with my improved multiple gearing, either for friction or hoisting purposes, the cam 0 enables the operator to throw the machine in or out of gear without stopping the engine.

What I claim, and desire to secure by Letters Patent, is

1. The hoistingmachine, as described, comprising a suitable framework carrying the engine, a shaft mounted in brackets, a driving-gear secured to said shaft, and a windingdrum mounted loosely thereon and bolted to said driving-gear, the said gear adapted to mesh either with a pinion keyed to a shaft which is rotatably mounted in hearings in a swinging frame, the said frame being loosely journaled to the engine-frame, or with a pinion mounted on and keyed to the engineshaft, said pinion adapted to mesh with another pinion journaled in one end of the swinging frame, and this pinion in turn meshing with a gear-wheel which is on the same shaft with the pinion which meshes with the driving-gear, and also a cam journaled in the engine-frame supporting the swinging frame and adapted to throw the pinion which meshes with the driving-wheel in or out of gear, substantially as shown and described.

2. In a hoisting-machine, the combination, with the drumshaft and windingdrum loosely journaled thereon, the said shaft being mounted in brackets and adapted to 1'0- tate therein, a driving-shaft having a pinion slidably mounted or keyed thereto, the said pinion adapted to mesh with a pinion mounted in a swinging frame, a gear-wheel carried by said swinging frame and meshing with said last-mentioned pinion, and a pinion carried by the swinging frame fastened to said gearwheel and adapted to mesh with the drivinggear on the drum-shaft, and means for conmeeting the driving-gear and winding-drum, substantially as described.

3. In a hoisting-machine, the combination, with the drum-shaft and winding-drum loosely j ournaled thereon, the said shaft mounted in brackets and adapted to rotate therein, of a driving-shaft having a pinion slidably mounted and keyed thereto, the said pinion adapted to mesh with a pinion mounted in a swinging frame, a gear-wheel carried by l and gear Z, said frame pivoted at one end to the machine-frame and adapted to move 15 vertically, using its pivot as an axis, together with a cam journaled in the machine-frame for operating said swinging frame, substantially,as shown and described.

In testimony that I claim the foregoing I 20 have hereunto set my hand this 12th day of November, 1891.

o OTTO FLOI-IR. Witnesses:

MARK M. DECKER, S. STRAUS. 

